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5 June, 02:40

What mass of aluminum is produced by the decomposition of 5.0 kg Al2O3? How many moles of oxygen are produced?

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  1. 5 June, 03:00
    0
    2646.13g of Al or 2.65kg of Al

    Explanation:

    Equation of reaction

    2Al₂O₃ → 4Al + 3O₂

    From equation of reaction,

    2 moles of Al₂O₃ will produce 4 moles of Al

    Number of moles = mass / molar mass

    Mass = number of moles * molarmass

    Molar mass of Al₂O₃ = 101.96g/mol

    Mass = 2 * 101.96 = 203.92g

    Mass of Al = number of moles (4) * molar mass of Al

    Mass = 4 * 26.98

    Mass = 107.92g

    203.92g of Al₂O₃ = 107.92g of Al

    5000g of Al₂O₃ = x g of Al

    X = (5000 * 107.92) / 203.92

    X = 2646.13g of Al

    X = 2.65Kg of Al
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